The winner for the best overdate is this 1883/2 for its
very dramatic 2 visible to the west and very slightly lower than the
3.

Highly sought after as a hole for it appears in coin albums.

This variety is very well known and catalogued by Breen
as BR2524.

This is the same coin, just a little tighter
photograph of the overdate.

Runner Up: 1883/2 S1-5002
F-09 FS-302 (FS-013.1)

Runner up is another 1883/2 variety (there are five 1883/2 varieties).
While not quite as dramatic as the winner, this 1883/2 is still a very
nice variety. The underlying 2 is slightly to the left of the 3. The
die crack arching over the date is diagnostic for this variety.

There is only one overdate variety in the shield nickel series that
is not an 1883/2 (1879/8). It is not very dramatic.

This is the same coin, just a little tighter photograph of the overdate.
The foot of the underlying 2 is the easiest to see.